Just had this sent to me and thought would post here so as many as possible know about it. More details including ephemeris can be found on space weather. The event occurs around 11.40pm Brisbane time tonight. For those who have clear weather go for it! It will be a challenge but someone here may get it.
PeterM.
"ASTEROID FLYBY: There's no danger of a collision, but newly-discovered asteroid 2009 DD45 will come close enough today when it flies by our planet 72,000 km (0.00048 AU) away. That's only twice the height of a geostationary communications satellite. The asteroid measures 30 to 40 meters across, similar in size to the Tunguska impactor of 1908. Closest approach occurs at approximately 1340 UT (5:40 am PST) on March 2nd. Experienced amateur astronomers may be able to photograph the space rock shining like an 11th magnitude star as it races through the constellations Hydra and Virgo. The timing favors observers in Hawaii, Australia, New Zealand, Japan and east Asia. Visit
http://spaceweather.com for updates and ephemerides."